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#ifndef foohooklistfoo
#define foohooklistfoo
/***
This file is part of PulseAudio.
Copyright 2006 Lennart Poettering
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
***/
#include <pulsecore/llist.h>
typedef struct pa_hook_slot pa_hook_slot;
typedef struct pa_hook pa_hook;
typedef enum pa_hook_result {
PA_HOOK_OK = 0,
PA_HOOK_STOP = 1,
PA_HOOK_CANCEL = -1
} pa_hook_result_t;
typedef enum pa_hook_priority {
PA_HOOK_EARLY = -100,
PA_HOOK_NORMAL = 0,
PA_HOOK_LATE = 100
} pa_hook_priority_t;
typedef pa_hook_result_t (*pa_hook_cb_t)(
void *hook_data,
void *call_data,
void *slot_data);
struct pa_hook_slot {
bool dead;
pa_hook *hook;
pa_hook_priority_t priority;
pa_hook_cb_t callback;
void *data;
PA_LLIST_FIELDS(pa_hook_slot);
};
struct pa_hook {
PA_LLIST_HEAD(pa_hook_slot, slots);
int n_firing, n_dead;
void *data;
};
void pa_hook_init(pa_hook *hook, void *data);
void pa_hook_done(pa_hook *hook);
pa_hook_slot* pa_hook_connect(pa_hook *hook, pa_hook_priority_t prio, pa_hook_cb_t cb, void *data);
void pa_hook_slot_free(pa_hook_slot *slot);
pa_hook_result_t pa_hook_fire(pa_hook *hook, void *data);
bool pa_hook_is_firing(pa_hook *hook);
#endif
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